Saw-guard.



J. Homwoon. SAW GUARD. APPHOATIOI I'ILED TEL! 1908.

899,300, Patenta Sept 22, 1908.

I UNITED mm JOHN HOLMWOOD, F DULUTHdIMINNESOTA, ASSIGNOR GNFQHALF T0LANNERSf OF WESTIDULU TH, MINNESOTA.

HARRY w.

sagamoaan.

Specification of Letters Patent. Application filed Iobruary 4, 1m. emuNo. arm.

To all whom it may-concern:

Be it known that' I JOHN HOLMWOOD, a citizen of the United tates ofAmerica, residi at Duluth, in the county of St. Louis and tate ofMinnesota, .have, invented certain new and. useful Im rovements in Saw-Guards, of which the fol owing is such a full, clear, and exactdescription as will enable others skilled in the art to which itapperfirst ful y describe of one of the locking cams and 'the lever forreleasing the same.

pointed out in the claims.

In the drawin s, Figure 1 is aplan view of a machine embo( ying theinvention, the sawguards being thrown forward. Fig'. 2 is a verticaltransverse section of the machine shown in Fig. 1 taken on the line 2 insaid fig-" ure and Fig. 3 is a similar view taken on the line 3 of Fig.1 with the saw-guards 'thrown' rearward. Fig. 4 is a rear perspectiveview The saw arbor, 1, mounted iusuitable stand ard's, 2, and is drivenfrom' anyconvenient source of power to rotate the saws, 3, all

4 of these parts being of the usual or any preferred construction. Thelath-buck is mounted to swing toward and from the sawarbor and in theform shown consists of two standards, 4, having their lower endspivotally secured to a suitable base or to-thefioon of the workroom andhaving' their u'per ends sha ed to present notches, 5, rn'w ich the bume of laths is held b the usual hook, in order that when the buch isthrown rearward the ends of the laths'will be brought against the sawsand the laths consequently cut to a uniform length. The standardsaresuitably braced and from their rearedgos, a frame, 7, projects upward tofurr'ish a handie by which the buck may be swung in the desireddirection. On the outer sides of the standards are rigidly securedlongitudinally slotted plates; 8, which project upward and 'msaa Sept.22, 190a;

rearward directly in front of and above the saws whereby, the saithplates. constitute uards to prevent accidental contact with t e saws.When the buck'is thrown rear-' ward, the saws will project through theslots in these guards so as to operate on the material to be cutbut-when the buck is thrown" forward the'guards will be in front of andb6? i ore, ward off any object moving toward the 0nd the teeth-of thesaws and will, theresaws.

the guards are almost entirely in rear ofth pivotal pointso'f thestandards. By reason ol this arrangement, the buck'may be moved rearwardvery easily when it is, desired .to use the saws and when thrown,rearward will.

By referring to Fig. 2,,it will be seen that drop until an; orted by thedriving shaft so a that there wil be no obstructionto prevent the sawscutting cntirel through'the bundle of laths as will be readilyunderstood on refstance to Fig. 3. 1 V In order to hold the buck in itsforward position when the saws are not being used,

provide a shaft, 9, which is journaled in the standards 2 and carriescams, ILL which are so'shaped as to have an excess of weight between t csaid shaft and the buck whereby the cams will tend to constantly. ptoward the buck so that when-the ,elt'js thrown forward to the limit'ofits movement the cams will be. in 'a horizontal position'and bear.directly against the hue as clearly shown in Fig. 2 In this positionofthe parts, a rearward movement of the buck will be prevented by thelocking; earns and the horizontal position shoulders or stops, 11, areprovided on the rear edges of the buck torecelve and support the en s Asit is necessary to release the cams to perk mit the buck to be thrownrearward, a trip, 12, is-provided consisting of a rod mounted inalbracket or ear, 13 on the buck and providcd at its lower end with a s'ur, 14, projecting into the path of one of t e cams, the upper end of t1e rod being pivotally attached "to a lever, 15, which is mounted on theupwardly projecting handle portion of the buck. When the workman graspsthe buck to swing it rearward, he depresses the free 'endof the lever 15and thereby-at once lifts the spur 14 so as to slightly raise the camsfrom theirhorjzontal position and perin order that the cams may not dropbelowof the cams.

'ings, it will be seen that I have readily understood upon referenceto-Flgig. 2

and 3 of the drawings. When the wor finished, the buck is swung forwardand the cams automatically drop into the locking position.

From the foregoing description, taken in connection with theaccompanying drawrovided a ver simple arrangement by whicii the saws wilbe guarded but may be instantly exoscd when they are to be used. Whenthe uck is swung forward so that the out laths may be easily removed,theguardsare automatically locked above I the saws and the lockingmechanism is so dis )osed that it can not be accidentally release by apasser-by. When the machine is to be used, a single movement will canthe buck to the desired position and re ease the locking mechamsm. I

Having thus describedm invention, what I claim anddesire to secureyLetters-Patent 1s I 1. The combination with a saw-guard and a vibratorysupport therefor, of a lockingcam bearing agamst the side of. saidsupport to hold theguard over the-saw, and a trip mounted on the supportand arranged to disgaging under sai engage the cam therefrom whereby theguar will expose the saw.

2. The combination with, a saw-guard, and a vibratory support therefor,of a locking-cam mounted to bear against the rear si e of said support,and a trip mounted on the support and 1provided with a spur engagingunder the coking-cam.

3. The combination with a saw-guard, and

a vibratory support therefor, of a lockin cam mounted to bear againstthe rear si e of thesupport, a trip mounted on the support and providedat its lower end with a spur projecting under the locking-cam, and alever fulcrumed on the support and pivotally connected with the u perend of the tri 4. The. combination 0 a saw-guard, an a vibratory supporttherefor having a shoulder on its rear side, a locking cam bearingagainst the su port and adapted to rest at its end on sai shoulder, atrip mounted on the support and )rovided with a s u'r enlocking cam, anmeans for operating said trip.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

JOHN HOLMWOOD.

- Witnesses:

ROBERT G.',WEDDELL, FRANK E. WATSON.-

